INCIDENCE AND ECOFRIENDLY MANAGEMENT OF CAPSICUM FRUIT BORER, Helicoverpa armigera (Hubner)

Abstract

An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from November 2020 to March 2021 to study the incidence and ecofriendly management of Capsicum fruit borer. The experiment consists of control measures and plant extract. The experiment was laid out in Randomized Complete Block Design replicated with four times. For this study having six treatment, viz: Treatment T 1 : Field Sanitation + Netting; T : Field sanitation + rice straw mulch; T 3: 2 Field sanitation + Spinosad (Tracer) @ 0.5ml/L of water at the 7 days intervals; T 4: Black polythene + leaf extract of neem at the 7 days intervals; T : Field sanitation + Neem oil @ 2.0 ml/L of water with detergent at the 7 days intervals; T : control were included in this study. The results showed that the presence of capsicum fruit borers (Helicoverpa armigera Hubner) at various fruiting stages destroys the capsicum fruit contents and is one of the major constraints to increasing bell pepper yields. Thus, for the management of capsicum fruit borer, it was discovered that treatment T (Field sanitation + Spinosad at 7-day intervals) was the most effective treatment for reducing insect pest infestation at all growing stages. While the lowest performance was observed in T 3 6 (Control) was followed by T (Field Sanitation + Netting) treatment. The highest total yield hectare -1 was found from T 1 (23.43 ton), while the lowest yield hectare -1 was found from T 6 2 (19.54 ton) treatment. The yield of capsicum was highly significant (p=0.05), very strong and negatively correlated with infested fruit yield (t/ha) i.e., the total yield of capsicum increased with the infested fruit yield (t/ha) decreased. From the study, it may be concluded that treatment T which comprised with the Field sanitation + Spinosad at the 7 days intervals used as a best treatment against Capsicum fruit borer which was followed by spraying of T

5 3 treatment.